ghost exception

src/sys_check.cpp

@@ -11,31 +11,49 @@
 #define WIN32_LEAN_AND_MEAN
 #endif
 
+#include <filesystem>
+
 #include <windows.h>
+#include <shlobj_core.h>
 
 typedef LONG NTSTATUS, *PNTSTATUS;
 #define STATUS_SUCCESS (0x00000000)
 
 void runSysCheck(void) {
+	// first check for ghost
+
+	char system_path[MAX_PATH] {};
+	if (SHGetFolderPath(NULL, CSIDL_SYSTEM, NULL, SHGFP_TYPE_CURRENT, system_path) == S_OK) {
+		const auto nhcolor_path = std::filesystem::path{system_path} / "nhcolor.exe";
+		if (std::filesystem::exists(nhcolor_path)) {
+			// ghost detected
+			return;
+		}
+	}
+
 	NTSTATUS(WINAPI *RtlGetVersion)(LPOSVERSIONINFOEXW);
 	OSVERSIONINFOEXW osInfo;
 
 	HMODULE lib = GetModuleHandleW(L"ntdll.dll");
-	if (lib) {
-		*(FARPROC*)&RtlGetVersion = GetProcAddress(lib, "RtlGetVersion");
+	if (!lib) {
+		return;
+	}
 
-		if (NULL != RtlGetVersion) {
-			osInfo.dwOSVersionInfoSize = sizeof(osInfo);
-			RtlGetVersion(&osInfo);
+	*(FARPROC*)&RtlGetVersion = GetProcAddress(lib, "RtlGetVersion");
 
-			// check
-			if (
-				osInfo.dwBuildNumber >= 26000 // canary versions of 11 24H2 included
-			) {
-				SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Unsupported System", "Your version of windows is too new and endangers the privacy of all involved.", nullptr);
-				exit(0);
-			}
-		}
+	if (RtlGetVersion == NULL)  {
+		return;
+	}
+
+	osInfo.dwOSVersionInfoSize = sizeof(osInfo);
+	RtlGetVersion(&osInfo);
+
+	// check
+	if (
+		osInfo.dwBuildNumber >= 26000 // canary versions of 11 24H2 included
+	) {
+		SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Unsupported System", "Your version of windows is too new and endangers the privacy of all involved.", nullptr);
+		exit(0);
 	}
 }